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| Applicants: | OMG BORCHERS GMBH [DE/DE]; Berghausener Straße 100 40764 Langenfeld (DE) | |||||||||||
| Inventors: | SIMPSON, Neil John; (DE). DESCHAMPS, Carina; (DE). OBERSTE, Dietmar; (DE) |
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| Agent: | EISENFÜHR SPEISER PATENTANWÄLTE RECHTSANWÄLTE PARTGMBB; Postfach 10 60 78 28060 Bremen (DE) | |||||||||||
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| Title | (EN) ENCAPSULATED ACCELERATORS FOR COATINGS (FR) ACCÉLÉRATEURS ENCAPSULÉS POUR REVÊTEMENTS |
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| Abstract: |
(EN)The invention relates to an organometallic catalyst that has been encapsulated to create a curing system for water-borne 2K polyurethane coatings. The catalyst is released from the capsules upon film-formation, and without further stimuli, to enable a wide range of application methods. Separation of the catalyst from the coating formulation enables beneficial properties prior to release and activation, such as longer pot-life upon mixing of reactive components, prevention of substantial hydrolysis during storage and use leading to longer shelf life, and the minimization of foam creation.
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Encapsulated Accelerators for Coatings
Field of the Invention
[0001] A non-tin organometallic catalyst has been encapsulated in order to create a curing system for water-borne 2K polyurethane systems. The capsules release the catalyst upon film-formation, and without further stimuli, to enable a wide range of application methods. By separating the catalyst from the paint formulation we can enable beneficial properties prior to release and activation, such as longer pot-life upon mixing of reactive components, prevent hydrolysis during storage and use and to minimise the creation of foam. This invention enables non-toxic, tin-free 2k PU formulations with a wide range of application methods and longer pot-life and shelf-life for paint manufacturers.